This online map collection comprises
47 volumes (1,800+ plates)
published by the G.M. Hopkins Company for Pittsburgh. These plat maps cover the greater Pittsburgh area through the years 1872 to 1940. To learn more, see the
About the G.M. Hopkins Maps
.

In January 2010, we just completed scanning the twelve remaining volumes of plat maps relating to Pittsburgh published by the Hopkins Company. We now provide access to all of the known Hopkins plat maps published for Pittsburgh.

Note that you can freely download map plate images as 200 dpi JPEG files for noncommercial and educational purposes. Reproductions of the Hopkins map plates are available for sale. Please see our information on how to
purchase a reproduction
.